Auth0
The enterprise hosted auth incumbent. Acquired by Okta in 2021. Mature, expensive, procurement-default.
VISIT AUTH0Key takeaway: Pick Auth0 when procurement has already decided, or when a mature compliance and audit posture is worth paying a premium for. It does effectively everything and it has been doing it for over a decade. For a new project with budget freedom, WorkOS, Clerk or Kinde cover the same shape for meaningfully less money.
Quick facts
- CategoryEnterprise SaaS
- LanguageTypeScript
- PricingPaid
- LicenseProprietary
- Created2013
- GitHub starsclosed
- HIPAA-eligibleYes (BAA)
- SSO / SAMLOut of box
What it is
Auth0 is the established enterprise hosted auth product, owned by Okta since 2021. Complete feature set, SSO, SAML, social logins, MFA, rules and hooks, organisation support. Pricing is enterprise-flavoured. New projects rarely pick it over Clerk in 2026 unless procurement says yes.
Best for
- Enterprises with existing Okta / Auth0 procurement
- B2B products with serious SSO / SAML / SCIM requirements at the enterprise tier
- Organisations needing the mature audit and compliance posture
When not to pick it
Skip Auth0 for new projects with budget flexibility, Clerk, WorkOS, Kinde all serve the same shape at meaningfully lower cost. Skip if your scale exceeds the $200/month tier where the bill becomes painful.
My take
Auth0 is mature and expensive. Most teams who choose it in 2026 are choosing it because the procurement team already approved it; new projects with freedom usually pick something else.
What a decade of enterprise identity actually buys
Auth0's feature list is close to exhaustive: SAML and OIDC federation, social and enterprise connections, MFA, organisations, custom domains, extensibility hooks for injecting your own logic into the token pipeline, anomaly detection, and the certifications a security questionnaire asks for. More usefully, it has been deployed against every strange enterprise identity setup that exists, so the odd case, an on-premise federation server, a customer whose provider sends malformed assertions, a tenant that needs its own login domain, has a documented answer. That is the real product. Newer vendors cover the common ninety percent elegantly. Auth0 covers the last ten percent that surfaces in a large customer's security review. Since the Okta acquisition the developer experience has felt static next to Clerk, and the extensibility model, powerful as it is, has been reworked more than once and is where teams most often report friction.
The cost curve and the migration question
Auth0 is paid, and the tier structure escalates as you add active users, enterprise connections and the machine-to-machine tokens that service-to-service calls consume. Teams routinely discover the bill is a multiple of what an equivalent WorkOS or Clerk setup would cost, and the enterprise tier is quote-based, which means a negotiation rather than a price page. Migrating out is possible but not casual. Bulk user export is supported, and moving credentials without forcing a global password reset can be arranged, though it runs through Auth0's support process rather than a self-serve button. Everything you pushed into the extensibility layer, custom database scripts and token-pipeline logic, has no equivalent on the other side and gets rewritten. Plan a dual-run period. Auth0 is rarely wrong, just frequently more expensive than the brief requires.
Frequently asked questions
Is Auth0 still worth it?
If your organisation already has Okta or Auth0 procurement, or you need the deepest enterprise federation coverage and compliance posture, yes. For a greenfield project with budget freedom it is hard to justify: Clerk gives better developer experience, WorkOS gives a stronger B2B SSO story, and both cost less for the same practical outcome.
Auth0 or WorkOS?
WorkOS if enterprise SSO, SAML, SCIM and audit logs are the requirement and you are building B2B SaaS. It is narrower, cheaper and built for exactly that. Auth0 if you need broad consumer plus enterprise coverage in one product, deep federation edge cases, or your procurement team has already signed the contract and reopening it is not worth the fight.
Can I migrate users off Auth0?
Yes. Bulk user export is supported, and credentials can usually be moved without forcing every user to reset a password, though that part goes through Auth0's support process. The harder work is everything around it: custom database connections and token-pipeline logic all need rewriting on the target, and you should expect to run both systems in parallel for a while.
Links
Compare Auth0 side-by-side
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Clerk
TypeScript-first hosted auth with the cleanest developer experience in the category in 2026.
Read the take →WorkOS
B2B-only auth focused on enterprise SSO, SAML, SCIM. Not a B2C product.
Read the take →Kinde
Newer hosted auth from the Australian team behind Canva-grade design polish.
Read the take →If Auth0 is your pick, the next conversation is short
The 30-min call is where your auth choice becomes a real architecture, a migration plan if you are switching, and a price range you can take to your stakeholders. Describe your stack, your scale, your compliance constraints. I tell you whether Auth0 is genuinely your fit.